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\nVerifying an identity using the sum and difference formulas\n

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\n\nPublisher:\n\nBrian McLogan\n\n\n
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\n👉 Learn how to verify the sum and difference of two angles trigonometric identities using the sum/difference formulas. To verify an identity means to ascertain that the left-hand side is equal to the right-hand side of the equality sign....\n👉 Learn how to verify the sum and difference of two angles trigonometric identities using the sum/difference formulas. To verify an identity means to ascertain that the left-hand side is equal to the right-hand side of the equality sign. To do this, we first expand all the given sum/difference of two angles trigonometric functions and then use the unit circle and the Pythagoras theorem to obtain all the known angles. We can then simplify the expressions on both sides of the equality sign to ascertain that they are equal.\n
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Resource Details

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Curator Rating
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Educator Rating
Not yet Rated
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Media Length
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1:51
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Grade
12th - Higher Ed
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Subjects
Math
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Media Type
Instructional Videos
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Source:
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\nBrian McLogan\n\n
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Date
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2016
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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identity, tangent, cosine, cosecant, simplifying, work, sides, time, sine, cotangent, trigonometric, trigonometric identities
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Additional Tags

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simplify, expression, trigonometric expressions, identities, reciprocal, pythagorean, solving, solve, equation, evaluate, double angle, sum and difference, formula, half angle, cos(x-(pi)/4)=sqrt(2)/2(cos(x)+sin(x)), how to verify an identity in pre calc, sum and difference formulas trig, trig, sum and difference formulas trigonometry, math, maths, brian mclogan, free math videos, verify identity trig, left side, side, problem, verify, apply, pick, sqrt 2, difference, verifying, times
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Classroom Considerations

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Best For: Explaining a topic
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\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: Verifying an identity using the sum and difference formulas\" href=\"/subscription/new\">\"Verifying\n\n
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